Download Windows 8.1 ISO To Install From USB Stick

Usually, whenever a new OS or OS update release happens, Microsoft will allow users to download it from the installer or download it as ISO to install them whenever we want using DVD/USB media. When Windows 8.1 was released this week, Microsoft made it available through Windows Store. However, there are ways to download Windows 8.1 ISO from Microsoft. Neowin posted the below steps which you can follow to download the ISO and install it from USB stick.

  • Head over to
  • Scroll down and click Install Windows 8 (This will trigger the installer assistant).
  • Enter your Windows 8, Windows 8 Pro or Windows 8 Upgrade product key, confirm that you will be downloading the bits for the version you paid for.
  • As soon as it starts downloading, close the installer assistant from the (X) in the top-right corner.
  • Go back to the Microsoft Windows upgrade page, click Install Windows 8.1, and download the newer installer assistant.
  • Run the newer install assistant.
  • When the download is complete, you can choose to install the OS right-then, or you can choose the option: Install by creating media. This option will allow you to create a USB/DVD media.
  • Select USB drive if you want to install the installation files to a USB stick or select the ISO option if you want to obtain the ISO.

Enjoy the Windows 8.1 experience after installing from the downloaded ISO. Neowin has even got some screenshots of the process. Check them out from the link below.

Source: Neowin

  • Sri

    Once I download the installer, will I be able to install it using the Win 8 Key or it will only allow users with Win 8.1 key to use the installer ?

    • Rasool Shaik

      No you cant install it using Windows 8 key. It will require retail keys atleast for installation. After you install you can use your Windows 8 key to activate it.

  • Contrariety

    I had issues upgrading from the store so had to find a work around. Upgraded to the 8.1 Preview then to Windows 8.1. This route seems to be more convenient though it would have been better if the initial upgrade was seamless.

  • Vincent Haakmat

    I hate the fact that I have to go through the store to update Windows. In a business environment ISO images are the preferred method of upgrading dozens of PCs. Not only does it go faster, but also frees up the limited bandwidth available.

  • Alvaro Soliz Ríos

    I don’t understand, does it mean I need to buy a new Key license, ir use my existing Windows 8 Pro Pack key to activate this Windows 8 installer? Could anyone explain me this key business please? :)

    • FateStayNight

      You have a tricky situation. The pro pack normally cannot be used for a fresh installation (officially, though there’s a workaround). That type of key is for adding Media Center to a Windows 8 Pro computer. You have to get your original core/pro windows 8 product key! Once you get the original key, you still can’t use it to do a fresh install of windows 8.1 since you can only use it to do a fresh install of windows 8(officially). But like all things, workarounds abound everywhere. If you can’t upgrade your windows 8 to 8.1 thru the store and you wish to do a fresh install using an 8.1 iso/usb installer, there’s an unofficial way to do it. The fastest and dirtiest unofficial procedure would be to use the following generic keys for the installation (
      Professional=XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB ) without turning on your wifi/ethernet. Once installed, change the product key to your legal core/pro key then restart. Go online and activate your product. Restart. Use your pro pack key to add media center back to the PC.

      Warning : If you’re upgrading an old non-touch computer from 8 to 8.1 then it’s fine. If you’re upgrading a windows 8 convertible tablet, you have to turn off secureboot from UEFI, make sure you have your TPM/bitlocker key, and you have a usb keyboard. When I did a fresh install to 8.1 on my acer w510 several months ago, I had no way to enter the key until I attached the usb keyboard. my dell latitude will only detect the keyboard thru its micro usb slot and not the usb slot on its dock.

      As I said, very very tricky. I’d recommend calling microsoft support rather than doing this on your own.

      • Alvaro Soliz Ríos

        You have explained this with detail so thank you very much because I’m an ignorant in these sort of things. However, as I understood you, the keys you posted, are used for the installation and not the activation, right? And my original key is from a Windows 8 Core, and is OEM. Can I use this key to activate the 8.1? Thank you very much again.

        • FateStayNight

          Yes. Before going online to activate, you have to change the product key to core first. Don’t change the key during activation when you’re online! Same thing I did to my acer w510. If you’re really set on doing this, you have to backup your files, have your recovery disks ready ( just in case), and read the experiences of those people who upgraded to 8.1 unofficially last september on your OEM’s forums so you’d know if you need to download drivers to install after the OS is installed and activated. Or just simply save yourself the hassle and call microsoft. 😉

          • Alvaro Soliz Ríos

            Hmm I tried to use the Core key you gave me in the Windows 8.0 installer, but it doesn’t accept it. Well, I think I’m going to stay with this Windows until end of the year. I prefer things to normalize with this Windows 8.1 matter and then download it from the Store. I hope the offer doesn’t expire until December. Thank you anyway for your support FateStayNight!

          • FateStayNight

            Alvaro, that key is for installing 8.1 using the 8.1 iso! If you’re using the 8.0 installer, use your key!

          • Alvaro Soliz Ríos

            I actually can’t with mine, as I told you is OEM and doesn’t accept it. Really I’m really afraid of updating to 8.1 now, I prefer to wait until this SO became stable for everyone. Thank you!

  • Tim

    Misleading title!! The link you give is NOT an ISO file, just a very small size setup file that has nothing to do with an ISO file!

    • FateStayNight

      It has everything to do with the iso. This isn’t torrent or direct download! The setup file will install the upgrade assistant which in turn will download the installation files into the ESD folder on your computer. It will then ask you if you want to run the setup directly or if you wish to create a installer usb stick or create an iso from the downloaded installer files.

  • Davide Sartoris

    “This product key cannot be used to install a retail version of windows 8”

    I bought the damn thing from a retail outlet. Fu ck this, i’m going to Ubunto. Why can NO ONE make a f ucking decent operating system. It CANNOT be this hard.

  • May Apriyanto

    When I try enter windows 8 product key and click next, it says that “We Can’t Connect Right Now” Check your internet connection and try again. Actually my laptop is connected to the internet. Can somebody help me?

    • shawnl

      I get the same message on multiple computers.
      When I try enter windows 8 product key and click next, it says that “We Can’t Connect Right Now” Check your internet connection and try again.

  • Greg Bell

    I purchased the full core version to load and run on my Mac. My DVD has damaged the the Windows 8.1 DVD. Is there a way I can download and then use the product key I got with the package?

  • Kingsly William

    Share with you an easy way to activate windows 8, you can go to buy a cheap product key, it can help you directly activate windows 8, it’s safe and reliable in this way.